firefox-3.0: pdf files with "attachment" headers can only be saved

[Mumia W.]

Loïc Grenié wrote:
> Package: firefox-3.0
> Version: 3.0+nobinonly-0ubuntu0.8.04.1
> Severity: normal
> 
> When a sends am "attachment" header the result is that
> Firefox only offers to save it and not to open it.
> [...]

Could you post a weblink to such a PDF file?